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(NoModeL) 2 Sheets-Shet 1.

L. A. COOPER.

LAMP.-

W V TH: W

(No Model.) 2 Sheets-Sheet 2.

L. A. COOPER.

LAMP.

No. 479,350, Paterited July 19, 1892.

UNITED STATES PATENT OFFICE.

LESLIE A. COOPER, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR OF ONE- HALF TO ALFRED A. WARNER AND ALBERT W. ALLEN, OF SAME PLACE.

LAMP.

SPECIFICATION forming part of Letters Patent No. 479,350, dated July 19, 1892. Application filed January 29, 1892. Serial No, 419,713. (No model.)

To all whom it may concern.-

Be it known that I, LESLIE A. COOPER, a

citizen of theUnited States, residing at S pringfield, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in Lamps, of which the following is a specification.

This invention relates to improvementsin the construction of oil-burning lamps, which to are particularly adapted for out-of-door use.

An object of the invention is to provide improved arrangements of the air-supplying and draft and exit passages to, from, and in relation to the annular oil reservoir and I 5 burner which is embodied in the lamp; also, the provision. of appliances in the oil-supply pipe for automatically checking the flow of oil through said pipe to the burner at the time of the disconnection of the burner and supply-pipe.

The invention has for its object to otherwise and further improve the construction of lamps of this class.

The invention consists in the constructions and arrangements of parts, all substantially as will hereinafter more fully appear, and be set forth in the claims.

Reference is to be had to the accompanying drawings, in which the present improvements in lamps are illustrated, Figure 1 being substantially a central vertical section through the lamp. Fig. 2 is a horizontal section taken on the plane indicated by the line 2 2, Fig. 1,

and as seen looking upwardly. Fig. 3 is a horizontal section'and plan View as seen below the plane indicated by line 3 3, Fig. 1, the burner, however, not being shown. Fig. 4 is a central vertical section of tubular engaging parts which have relation to the lamp-sup- 4o porting and oil-conveying members, the same being shown on a larger scale than in the preceding figures.

The lamp apparatus is supported and in part constituted by the frame A, which consists of the parallel vertical tubes united at top and bottom by connecting cross-sections of tubing suitably coupled.

to indicates the oil-inlet pipe connected by the T-coupling a at the top middle portion of the tubular frame for conveying the oil by gravity, pressure, or siphon action from the oil-supply to the annular reservoir 7) of the burner B, the oil passing to the said reservoir preferably by passages therefor in one side of the tubular lamp-supporting frame, the sections at the other side of said frame being plugged up, as indicated at a a at top and bottom.

It will be noticed with reference to Fig. 1 that the vertical tubular side-support and oilconduit consists of tube-sections d and f, the latter being of the greater diameter, and has at its bottom the closing-wallf laterally eX- tended, adjacent to which and in communication with the passage in said tube-section f is the tube-section g, which by the T-coupling h is in communication with the passage 5 which leads to the annular burner-reservoir I).

f indicates a thimble or tubular section which has its upperportion externally flanged and having its lower extremities soldered or otherwise connected within the upper end portion of the tube-section f, previous to which soldering or connection the inwardlyflanged and internally-screw-threaded coupling-sleeve 2' is engaged with the said thimble, whereby the coupling-sleeve may rotate on but be held against endwise movement relative to the thimble-provided tube-section.

The tube-section d has at its lower end the So screw-threaded enlargement d which is engaged by the said coupling-sleeve, and also has the downwardly-extended pipe-section d formed on or attached thereto, which latter section is of such a reduced diameter as to pass through the thimble f This downwardly-extended section (1 has at its lower end a tubular shell (1 soldered thereto, with its lower end wall d normally located slightly above the lower end wall f This shell has, somewhat above its lower end wall, its axial passage contracted to constitute a seat (1 for the valve j, which is formed upon the upper end of the valve-spindle 7' which spindle passes axially through and beyond a guiding 5 perforation therefor in the lower end of the tubular shell d and rests against the bottom wall f of the tube-section f. The spring j set within the said tubular shell d exerts a downward pressure upon the valve.

0n taking the lamp apart for repair or other purpose necessitating the uncoupling of the tube-sections d and f, as the tube-section f recedes from the section thereabove the valve is permitted to close under the action of its spring and thereby prevent the passage or leakage of oil through the upper section d.

The upper extremity of the annular reservoir-burner is surrounded by a circular centrally-apertured upwardly-flanged plate It, a plan of which is seen in Fig. 3, said plate having at each side of the central aperture the apertures at which are connected the upper ends of the vertical" tubes m m, which tubes attheirlowerends communicate through the upper wall thereof with the chamber at, which, as indicated by the dotted lines in Fig. 3, is approximately of elliptical form, although this conformation is immaterial. The upper wall of said chamber n is also centrally apertured, in which is fitted the lower extremity of the annular burner-reservoir, so that there is a free communication for aii passage down the tubular flues 'm, through the chamber or conduit n, and up through the central space I).

The burner itself constitutes no part of this invention, being the device of another, and has provided therefor the glass chimney l. The chimney is surrounded by the glass inclosure or globe D, the somewhat contracted lower portion of which rests upon the circular plate 70 and is held against lateral displacement by the flange k of thelatter. An inclosing and draft structure is supported on and above the globe, which, as shown, consists of the circularbottom wall o,downwardly flanged, as at 0 having the upwardly and outwardly extended surrounding wall-section p, and thence upwardly extended in the domeshaped hood g, which is open at its upper end, and all composed of thin sheet metal. The wall 19 is provided with the series of perforations or passages a, while the bottom wall of the said structure has the perforations or passages y y. Said bottom wall 0 supports the central draft-tube 7', which is open at its lower end but closed at its upper end, having, however, adjacent thereto the openings 5. The dome-shaped hood g at its lower portion supports the downwardly and outwardly flaring guard t for protecting the air-inlet openings 01:. A conical cap it is supported above the domeshaped hood, leaving an exit opening or passage between said latter-named parts, surrounding which passage and held in suitable proximity by bracket-strips is a storm shield or band '0. The tubular supports d (1 pass vertically through apertures in the shield t and the upper sections thereof are encircled by clips or yokes w, laterally extended from and supported on the said structure, which comprises the dome-shaped hood and conical cap, which clips or yokes have a sliding engagement with the tubular support. The said tubular supports (Z are shown, necessarily, in the illustration on the scale here presented as having intermediate portions broken away, it being understood that the supports extend upwardly considerably beyond the top of the lamp.

On desiring to light the lamp the dome qis upwardly slid, and with it the parts, which move as one therewith, notably the tube 7',

cap a, band '0, and guard t, together with the clips w, which guide said parts in their movemceints relative to the vertical tube members (I 2 indicates the wick-raising device, of the most usual form in burners for oil-lamps, the sameconsisting, of a rotatable spindle and wick-engaging star-wheel; but there is combined with the outer end of the horizontallyextended spindle a section of flexible shafting z which is downwardly turned and has connected thereto the rod 2 which is extended downwardly sufficiently far -to be conveniently reached for regulating the flame at the burner when the lamp is suspendedin an ele vated position.

The burner-reservoir is shown as directly acted on and maintained cool by the external atmosphere.

The chimney is inclosed in the globe, which while of sucha small site as insures compactness in the make-up of the lamp as a whole is enough larger in diameter than the chimney to give sufficient circulating space, whereby the air entering at the flues 0c and 'y will not be unduly heated to thereby, on entering the space within the oil-reservoir, heat the reservoir and produce a gasification too far down below the burning edge of the wick. The chimney does not closely fit in its entrance into the lower orifice of the tube, and hence any unusual gusts or drafts induced at the top of said tube will be rendered imperceptible in the combustion at the burner, as the increased draft in the central tube will cause equalizing quantities of air to pass into the central tube from the chamber in the globe. The currents upwardly within and through the dome-shaped hood g tend to induce asteady draft upwardly through the central tube 9 and chimney, which upwardly-passing air is replenished by new supplies that, entering the globe-chamber, pass downwardly through the globe and the vertical passages and upwardly through the central passage within the burner and through the chimney. In other words, there is established by the provision and arrangement of the flues and hoods, substantially as described, conditions for an even and steady combustion at the burner for illuminat-ing purposes which will not be adversely affected by variable and excessive drafts outside of the lamp.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. A lamp consisting of a burner having a central draft-tube and a conduit for conveyin g oil to the burner, a transparent chimney supported by the burner and extended upwardly therefrom, and a globe which widely surrounds the upper portion of the burner and extends upwardly therefrom, and which also surrounds the chimney, a wall which substantially closes the globe at its bottom, there being, however, flues in communication with the globe -chamber, leading downwardly therefrom and communicating with the central draft-tube of the burner, a hood or dome having a bottom wall supported at the top of the globe-chamber and having an opening at its top and also having a central draft-tube, into the lower open end of which the chimney may direct the products of combustion, and having openings in its top, which has its position below the top of the hood, and the said hood having openings for taking air thereinto near its bottom and also having other openings through its bottom for communicating with the globe-chamber, substantially as described.

2. A lamp consisting of a burner having a draft-tube and a conduit for conveying oil to the burner and the parallel vertical supports 01 d, the chimney Z, supported by the burner and extended upwardly therefrom, and a globe which widely surrounds the upper portion of the burner extending upwardly therefrom, also surrounding the chimney and having a wall which substantially closes it at its bottom, there being, however, fines in communication with the globe-chamber, leading downwardly therefrom and communicating with the draft-tube of the burner, the hood or dome q, having the bottom wall 0, with the openings yy for their communication between the hood and globe, and having at its bottom the air-ingress openings :1: 0c, the downwardlyfiaring flange t, and the central draft-tube 0", into the lower end of which the chimney may direct the products of combustion, which tube has openings in its top, which latter has its position below the top of the hood, and the said hood provided at its top with the exitflues and also having the radially-extended clips w U), which have sliding engagements with the said parallel vertical supports, all substantially as and for the purposes set forth.

3. The combination,witha lamp, of atnbular support formed in'sections d and f, the former having a connection with-the oil-supply and having a contracted tubular extension which enters the section f, and which has the opening for establishing communication between the tube-sections d and f, and having the normally-closing valve with the axiallyextended spindle 7' and a coupling for drawing the section f to connection with the section cl and for effecting the abutment of a portion of said section f against said spindle for forcing the valve open, and a pipe connection between said section f and the burner, substantially as i described.

4. The combination, with a lamp, of a support therefor, consisting of tubular sections cl and f, the former for connection with the oilsupply and the latter connected with the burner and having a wall or rest f and rotatably engaged with its upper portion, the coupling 1', and the section d, having the screw-threaded external portion, and the pipe extension, of reduced size, extended downwardly into the section f and having a valveseat opening in communication with the passage of the section f, and the spring-pressed valve with a stem movably supported by the section which has the value-seat and adapted to to be borne upon by said rest on the coupling of the parts to hold the valve open, substantially as described.

LESLIE A. COOPER.

Witnesses:

WM. S. BELLows, A. W. ALLEN. 

